The Belmont Bicycle Repair Collective is a shop just up the street. I've been coming there since before I can remember with my parents, over the past years I've been becoming a bicycle mechanic and they have been so friendly in helping me learn and fix my mistakes. The other day I went in asking to have a fork milled, I was full ready to pay for the labor but upon asking the price the mechanic said "Well I wouldn't feel right about charging you for that, so I'd just have you do it" He handed me the race cutter and gave me some quick pointers and away I went.
Awesome for an aspiring mechanic for me but past that they are even cooler, I've seen people come in asking for a full overhaul and had them look over the bike and decline noting it was just a simple derailer adjustment which he did for free